Rated 5 out of 5 stars.
Is your serpentine belt squealing or slipping?

It might be time to replace the belt tensioner.

The ACDelco 38365 Professional Automatic Belt Tensioner and Pulley Assembly is a premium aftermarket part designed to keep your accessory drive belt at the perfect tension.

A worn tensioner can cause belt misalignment, noise, and even premature wear on your alternator, AC compressor, or power steering pump.
This unit features a patented vibration damping system that reduces stress on the belt and other components, helping everything last longer.

It's made to meet or exceed OEM specs, so you get a precise fit and reliable performance.
Installation is straightforward if you're handy, but always consult a repair manual for your specific vehicle.
Compatible with many GM models as well as other domestic and import vehicles – just double-check your fitment before ordering.

Don't let a failing tensioner leave you stranded.
